Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2be98b1ce95272dec6bb7a2f0b6b58aed3823378efe1b1998be6db20fc6834fd' 
  AND token = '/weRN1MjrPCW4g9BH73nZpV/T5Df/Lz9a/zzhDW/xmc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}